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SPRING HINGE.

Patented May 29, 1888.

WITNESSES N PETERS. Phulmlilhognpher. Washington, o. z;

ATTORNEYS.

,lNrrRD STATES ENT FFICEe SPRING- HINGE.

SPECIPICATION forming part of Letters Patent No. 383,555, dated May 29,1888.

Application filed May 17, 1887. Serial No. 238,449. (ModeLl To all whom,it may concern:

Be it known that I, LORENZ BOMMER, of Brooklyn, in the county of Kingsand State of New York, have invented certain new and useful Improvementsin Spring Hinges, of which the following is aspecification.

This invention has reference to improvements in single and doublespring-hinges; and the invention consists of a spring-hinge the leavesof which are provided with perforated ears bent up at right angles toand integral with the body of said leaves, and with a stopflange havingrecesses for the stop-pins, said stop-flange extending from one ear tothe other.

The invention consists, further, of a leaf having perforated ears,pintle-sockets provided with pins which engage holes of said ears,washers interposed between the pintlesockets and the spring-sockets ofthe barrel, and a pintle attached to said pintle-sockets.

In the accompanying drawings, Figure 1 represents a side elevation of adouble springhinge, partly in section. Fig. 2 is a horizontal section ofthe same on line as a, Fig. 1; and Fig. 3 is also a horizontalsection-online y y, Fig. 1, showing the hinge folded up.

Similar letters of reference indicate corresponding parts.

A A in the drawings represent the springbarrels,and A theconnecting-web, of a double springhinge of the usual construction; and Band G, the outside leaves, which are in doubleacting hinges attached,respectively, to the door-frame and door, and which are made of sheetmetal of suitable thickness. The leaves B and (l are provided withstop-flanges b b at the upper and lower ends, and with centrallyperforated disk-shaped ears (1, that are made integral with the body ofthe leaf and bent up at right angles to the same, in connection With theauxiliary bent up stop -fianges b, which extend longitudinally along theinner edge of the leaf, and are also made integral therewith, saidflanges giving greater strength to the leaf and forming "the connectionbetween the body of the same and the ears d d, as well as a convenientrest for the tensionpin of the hinge, as shown in Figs. .1 and 2.

Between the perforated ears d d of the leaves B and O and the springsockets of the barrel. are interposed disk-shaped washers d, that takeup the friction of the ears with the spring-sockets of thespring-barrels without weakening or reducing the thickness of theperforated ears d d by wear. The pintlesockets D are connected by pins(2 to registering holes (1 of the ears d and washers d, the pintlesockets being rigidly connected thereto and to the spring-barrel by thepintle E, which is riveted to said pintlesockets by enlarging the ends,or by other suitable means, so as to prevent the moving up or down ofthe pintle. The ends or shanks of the pintle sockets D are screw-threaded for applying thereto detachable screw caps of plain orornamental shape. These screw-caps,however, form no part of thisapplication, as they have been specially claimed in a separateapplication filed at the same date herewith.

The spring-barrel and spring and. other accessories are the same as inother springhinges, the essential feature of this invention being thedisk-shaped perforated ears, madeof sheet metal and bent up at rightangles to the leaves and integral therewith, and the connection of theleaves attached to the door and door-frame with the pintle-sockets bymeans of the perforated and disk-shaped ears and intermediate washers.The advantages claimed by this arrangement are, that the hinge can bemade lighter, cheaper, and stronger, and that a great gain is made inspring-power, as the spring-barrel is nearly equal in length with theleaves and permits the use of a longer and stronger pin than waspossible here tofore.

Having thus described my inv ention,I claim as new'and desire to secureby Letters Patent-- 1. In a spring-hinge, a leaf having perforated earsbent at right angles to and integral with the body of said leaf, and abent-up stopflange having recesses for the stop-pins, said flangeextending from one ear to the other substantially as set forth.

2. In a spring-hinge, the combination of a leaf having perforated earswith pintle sockets having pins which engage holes in said ears, washersinterposed between the pintlesockets and the spring-sockets of thebarrel, and a pintle attached to said pintle-sockets, substantially asset forth.

3. In a spring-hinge, the combination of a leaf havingcentrally-perforated ears and holes my invention I have signed my namein presat some distance from the central perforation, ence of twosubscribing witnesses. Washers having holes registering therewith,pintle-sockets having pins engaging the holes 5 of the ears and washers,and a pintle attached Witnesses:

to said sockets, substantially as set forth. CARL KARP,

In testimony that I claim the foregoing as MARTIN PETRY.

LORENZ BOMMER.

